p0 1[Pa] Amplitude of incoming pressure wave rho_ap 12[kg/m^3] Apparent density of glass wool d_av 10[um] Mean fiber diameter R_f 3.18e-9[N*s/m^2]*(rho_ap/1[kg/m^3])^1.53/d_av^2 Flow resistivity L 600[mm] Muffler length H 150[mm] Muffler height W 300[mm] Muffler width L_io 150[mm] Inlet and outlet length R_io 40[mm] Inlet and outlet radius D 15[mm] Liner thickness